From
To
Date
Wed, Jul 26

Authorised IRCTC partner

Udumalaipettai To Chengalpattu Trains

Popular Trains from Udumalaipettai to Chengalpattu

29 found from CBE, UDT, PTJ to MAS, TRL, AVD, CGL, PER

Train name and numberStarting stationDurationEnding station

12674 - CHERAN EXPRESS

Runs onMTWTFSS

10:50 PM

CBE

Coimbatore

55 KM from UDT

8h 9m

426 KM

10 stops

07:00 AM

MAS

Chennai

52 KM from CGL

Starting from ₹325

12672 - NILAGIRI EXP

Runs onMTWTFSS

10:25 PM

CBE

Coimbatore

55 KM from UDT

7h 55m

426 KM

10 stops

06:20 AM

MAS

Chennai

52 KM from CGL

Starting from ₹325

12676 - KOVAI EXPRESS

Runs onMTWTFSS

03:15 PM

CBE

Coimbatore

55 KM from UDT

7h 35m

426 KM

13 stops

10:50 PM

MAS

Chennai

52 KM from CGL

Starting from ₹190

20644 - MAS VANDEBHARAT

Runs onMTWTFSS

06:00 AM

CBE

Coimbatore

55 KM from UDT

5h 50m

426 KM

6 stops

11:50 AM

MAS

Chennai

52 KM from CGL

Starting from ₹1215

12244 - CBE MAS SHATABDI

Runs onMTWTFSS

03:05 PM

CBE

Coimbatore

55 KM from UDT

7h

426 KM

8 stops

10:05 PM

MAS

Chennai

52 KM from CGL

Starting from ₹1060

22652 - PGT MAS EXPRESS

Runs onMTWTFSS

05:45 PM

UDT

Udumalaippettai

9h 8m

404 KM

20 stops

02:53 AM

TRL

Tiruvallur

47 KM from CGL

12680 - MAS INTERCITY

Runs onMTWTFSS

06:20 AM

CBE

Coimbatore

55 KM from UDT

7h 30m

426 KM

14 stops

01:50 PM

MAS

Chennai

52 KM from CGL

Starting from ₹190

22638 - WEST COAST EXP

Runs onMTWTFSS

07:10 AM

PTJ

Coimbatore

51 KM from UDT

8h 40m

426 KM

31 stops

03:50 PM

MAS

Chennai

52 KM from CGL

Starting from ₹340

12624 - TVC CHENNAIMAIL

Runs onMTWTFSS

11:40 PM

CBE

Coimbatore

55 KM from UDT

6h 48m

415 KM

23 stops

06:28 AM

AVD

Avadi

49 KM from CGL

Starting from ₹315

12686 - MAQ MAS EXP

Runs onMTWTFSS

11:55 PM

PTJ

Coimbatore

51 KM from UDT

7h 3m

415 KM

20 stops

06:58 AM

AVD

Avadi

49 KM from CGL

Starting from ₹310

16160 - MAQ CHENNAI EXP

Runs onMTWTFSS

03:30 PM

PTJ

Coimbatore

51 KM from UDT

10h 38m

378 KM

51 stops

02:08 AM

CGL

Chengalpattu

Starting from ₹855

22640 - CHENNAI EXP

Runs onMTWTFSS

09:40 PM

PTJ

Coimbatore

51 KM from UDT

6h 57m

415 KM

26 stops

04:38 AM

AVD

Avadi

49 KM from CGL

Starting from ₹320

12682 - CBE MAS EXPRESS

Runs onMTWTFSS

11:30 PM

CBE

Coimbatore

55 KM from UDT

7h 49m

426 KM

9 stops

07:20 AM

MAS

Chennai

52 KM from CGL

Starting from ₹835

13352 - ALLP DHN EXPRES

Runs onMTWTFSS

12:20 PM

CBE

Coimbatore

55 KM from UDT

7h 38m

398 KM

88 stops

07:58 PM

TRL

Tiruvallur

47 KM from CGL

Starting from ₹275

12602 - MAQ CHENNAIMAIL

Runs onMTWTFSS

09:55 PM

PTJ

Coimbatore

51 KM from UDT

6h 48m

398 KM

32 stops

04:43 AM

TRL

Tiruvallur

47 KM from CGL

12696 - TVC CHENNAI EXP

Runs onMTWTFSS

02:05 AM

CBE

Coimbatore

55 KM from UDT

7h 55m

426 KM

23 stops

10:00 AM

MAS

Chennai

52 KM from CGL

18190 - ERS TATA EXP

Runs onMTWTFSS

12:02 PM

PTJ

Coimbatore

51 KM from UDT

7h 53m

427 KM

50 stops

07:55 PM

PER

Chennai

54 KM from CGL

Starting from ₹290

22648 - KCVL KRBA EXP

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

54 stops

11:10 PM

MAS

Chennai

52 KM from CGL

Starting from ₹325

22643 - PATNA EXPRESS

Runs onMTWTFSS

09:30 PM

CBE

Coimbatore

55 KM from UDT

7h 55m

427 KM

47 stops

05:25 AM

PER

Chennai

54 KM from CGL

Starting from ₹325

22208 - MAS SF AC EXP

Runs onMTWTFSS

02:45 AM

CBE

Coimbatore

55 KM from UDT

7h 40m

426 KM

16 stops

10:25 AM

MAS

Chennai

52 KM from CGL

Starting from ₹1080

12522 - RAPTISAGAR EXP

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

62 stops

11:10 PM

MAS

Chennai

52 KM from CGL

Starting from ₹325

12515 - CBE SCL EXP

Runs onMTWTFSS

09:45 PM

CBE

Coimbatore

55 KM from UDT

7h 40m

427 KM

47 stops

05:25 AM

PER

Chennai

54 KM from CGL

22641 - SHALIMAR EXP

Runs onMTWTFSS

01:35 AM

CBE

Coimbatore

55 KM from UDT

7h 35m

427 KM

39 stops

09:10 AM

PER

Chennai

54 KM from CGL

Starting from ₹325

22669 - ERS PNBE EXP

Runs onMTWTFSS

04:40 AM

CBE

Coimbatore

55 KM from UDT

8h 5m

427 KM

38 stops

12:45 PM

PER

Chennai

54 KM from CGL

Starting from ₹325

12969 - CBE JAIPUR EXP

Runs onMTWTFSS

09:25 AM

CBE

Coimbatore

55 KM from UDT

7h 50m

426 KM

41 stops

05:15 PM

MAS

Chennai

52 KM from CGL

Starting from ₹325

22646 - AHILYANAGARI EX

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

50 stops

11:10 PM

MAS

Chennai

52 KM from CGL

Starting from ₹325

12512 - RAPTISAGAR EXP

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

60 stops

11:10 PM

MAS

Chennai

52 KM from CGL

Starting from ₹835

12698 - TVC MAS EXP

Runs onMTWTFSS

02:45 AM

PTJ

Coimbatore

51 KM from UDT

7h 40m

426 KM

14 stops

10:25 AM

MAS

Chennai

52 KM from CGL

Starting from ₹320

12507 - ARONAI EXPRESS

Runs onMTWTFSS

01:35 AM

CBE

Coimbatore

55 KM from UDT

7h 35m

427 KM

60 stops

09:10 AM

PER

Chennai

54 KM from CGL

Starting from ₹325

Covid Special Trains from Udumalaipettai to Chengalpattu

49 found from TUP, CBE, PTJ, UDT to CGL, AVD, TRL, MAS, PER, MS, TBM

Train name and numberStarting stationDurationEnding station

06028 - Villupuram Tambaram MEMU Express Special

Runs onMTWTFSS

03:45 PM

TUP

Tiruppur

59 KM from UDT

337 KM

11 stops

07:23 AM

CGL

Chengalpattu

02624 - TVC MAS EXPRESS

Runs onMTWTFSS

11:40 PM

CBE

Coimbatore

55 KM from UDT

6h 48m

415 KM

22 stops

06:28 AM

AVD

Avadi

49 KM from CGL

02602 - MAQ MAS SF EXP

Runs onMTWTFSS

09:40 PM

PTJ

Coimbatore

51 KM from UDT

6h 48m

398 KM

32 stops

04:28 AM

TRL

Tiruvallur

47 KM from CGL

02640 - ALLP MAS EXP

Runs onMTWTFSS

09:55 PM

PTJ

Coimbatore

51 KM from UDT

7h 3m

415 KM

25 stops

04:58 AM

AVD

Avadi

49 KM from CGL

02680 - CBE MAS EXPRESS

Runs onMTWTFSS

06:15 AM

CBE

Coimbatore

55 KM from UDT

7h 35m

426 KM

12 stops

01:50 PM

MAS

Chennai

52 KM from CGL

02641 - TVC SHM EXP

Runs onMTWTFSS

01:35 AM

CBE

Coimbatore

55 KM from UDT

7h 35m

427 KM

37 stops

09:10 AM

PER

Chennai

54 KM from CGL

02507 - TVC SCL EXPRESS

Runs onMTWTFSS

01:35 AM

CBE

Coimbatore

55 KM from UDT

7h 35m

427 KM

57 stops

09:10 AM

PER

Chennai

54 KM from CGL

02698 - TVC MAS SPL

Runs onMTWTFSS

02:45 AM

PTJ

Coimbatore

51 KM from UDT

7h 40m

426 KM

13 stops

10:25 AM

MAS

Chennai

52 KM from CGL

02515 - CBE SCL SF SPL

Runs onMTWTFSS

09:45 PM

CBE

Coimbatore

55 KM from UDT

7h 40m

427 KM

46 stops

05:25 AM

PER

Chennai

54 KM from CGL

03352 - ALLP DHN SPL

Runs onMTWTFSS

12:20 PM

CBE

Coimbatore

55 KM from UDT

7h 43m

398 KM

78 stops

08:03 PM

TRL

Tiruvallur

47 KM from CGL

02522 - KYQ BNC SPECIAL

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

58 stops

11:10 PM

MAS

Chennai

52 KM from CGL

02648 - KCVL KRBA SPL

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

53 stops

11:10 PM

MAS

Chennai

52 KM from CGL

02676 - CBE MAS EXPRESS

Runs onMTWTFSS

03:15 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

12 stops

11:00 PM

MAS

Chennai

52 KM from CGL

06185 - TVC GHY EXP

Runs onMTWTFSS

02:30 AM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

46 stops

10:15 AM

MAS

Chennai

52 KM from CGL

02646 - KCVL INDB FEST

Runs onMTWTFSS

03:25 PM

CBE

Coimbatore

55 KM from UDT

7h 45m

426 KM

49 stops

11:10 PM

MAS

Chennai

52 KM from CGL

02682 - CBE MAS EXPRESS

Runs onMTWTFSS

11:30 PM

CBE

Coimbatore

55 KM from UDT

7h 49m

426 KM

8 stops

07:20 AM

MAS

Chennai

52 KM from CGL

02969 - CBE JP EXPRESS

Runs onMTWTFSS

09:25 AM

CBE

Coimbatore

55 KM from UDT

7h 50m

426 KM

34 stops

05:15 PM

MAS

Chennai

52 KM from CGL

08646 - MAQ HTE SPL

Runs onMTWTFSS

12:02 PM

PTJ

Coimbatore

51 KM from UDT

7h 53m

427 KM

46 stops

07:55 PM

PER

Chennai

54 KM from CGL

02643 - PATNA EXPRESS

Runs onMTWTFSS

09:30 PM

CBE

Coimbatore

55 KM from UDT

7h 55m

427 KM

43 stops

05:25 AM

PER

Chennai

54 KM from CGL

02672 - MTP MAS EXP

Runs onMTWTFSS

10:25 PM

CBE

Coimbatore

55 KM from UDT

7h 55m

426 KM

9 stops

06:20 AM

MAS

Chennai

52 KM from CGL

02696 - TVC CHENNAI EXP

Runs onMTWTFSS

02:05 AM

CBE

Coimbatore

55 KM from UDT

7h 55m

426 KM

21 stops

10:00 AM

MAS

Chennai

52 KM from CGL

08190 - ERS TATA SPL

Runs onMTWTFSS

12:02 PM

PTJ

Coimbatore

51 KM from UDT

8h 3m

427 KM

48 stops

08:05 PM

PER

Chennai

54 KM from CGL

06008 - Ernakulam MGR Chennai Central SpecialFare Special

Runs onMTWTFSS

02:22 AM

PTJ

Coimbatore

51 KM from UDT

8h 3m

426 KM

11 stops

10:25 AM

MAS

Chennai

52 KM from CGL

06192 - TVC TATA SPL

Runs onMTWTFSS

12:02 PM

PTJ

Coimbatore

51 KM from UDT

8h 3m

427 KM

51 stops

08:05 PM

PER

Chennai

54 KM from CGL

06359 - ERS PNBE SPL

Runs onMTWTFSS

04:40 AM

CBE

Coimbatore

55 KM from UDT

8h 5m

427 KM

33 stops

12:45 PM

PER

Chennai

54 KM from CGL

06354 - Kochuveli Chennai Central Sabarimala Spl

Runs onMTWTFSS

04:50 AM

CBE

Coimbatore

55 KM from UDT

8h 5m

426 KM

19 stops

12:55 PM

MAS

Chennai

52 KM from CGL

02674 - CBE MAS SFEXP

Runs onMTWTFSS

10:50 PM

CBE

Coimbatore

55 KM from UDT

8h 9m

426 KM

9 stops

07:00 AM

MAS

Chennai

52 KM from CGL

02686 - MAQ MAS EXP

Runs onMTWTFSS

11:55 PM

PTJ

Coimbatore

51 KM from UDT

8h 9m

426 KM

19 stops

08:05 AM

MAS

Chennai

52 KM from CGL

05304 - ERS-GKP SPL

Runs onMTWTFSS

04:40 AM

CBE

Coimbatore

55 KM from UDT

8h 15m

427 KM

30 stops

12:55 PM

PER

Chennai

54 KM from CGL

06628 - MAQ MAS SPL

Runs onMTWTFSS

07:20 AM

PTJ

Coimbatore

51 KM from UDT

8h 30m

426 KM

30 stops

03:50 PM

MAS

Chennai

52 KM from CGL

06044 - TVC MS SPL

Runs onMTWTFSS

04:15 AM

CBE

Coimbatore

55 KM from UDT

8h 30m

427 KM

21 stops

12:45 PM

MS

Chennai

52 KM from CGL

Starting from ₹1100

06048 - CAN MAS SPL

Runs onMTWTFSS

01:55 PM

CBE

Coimbatore

55 KM from UDT

8h 40m

426 KM

17 stops

10:35 PM

MAS

Chennai

52 KM from CGL

06092 - Tirunelveli Chennai Egmore Jansadharan Special Via Kottayam

Runs onMTWTFSS

12:20 PM

CBE

Coimbatore

55 KM from UDT

8h 40m

427 KM

20 stops

09:00 PM

MS

Chennai

52 KM from CGL

05556 - ERS DBG SPL

Runs onMTWTFSS

12:55 AM

CBE

Coimbatore

55 KM from UDT

8h 45m

427 KM

30 stops

09:40 AM

PER

Chennai

54 KM from CGL

06049 - CBE PNBE SPL

Runs onMTWTFSS

08:45 PM

CBE

Coimbatore

55 KM from UDT

8h 55m

427 KM

39 stops

05:40 AM

PER

Chennai

54 KM from CGL

06056 - JU TBM SF SPL

Runs onMTWTFSS

10:18 AM

CBE

Coimbatore

55 KM from UDT

8h 57m

404 KM

46 stops

07:15 PM

TBM

Chennai

29 KM from CGL

06626 - Coimbatore Chengalpattu Tri Weekly Special

Runs onMTWTFSS

10:50 PM

CBE

Coimbatore

55 KM from UDT

9h 10m

378 KM

10 stops

08:00 AM

CGL

Chengalpattu

06080 - ERS TBM SPL

Runs onMTWTFSS

11:20 PM

CBE

Coimbatore

55 KM from UDT

9h 10m

404 KM

17 stops

08:30 AM

TBM

Chennai

29 KM from CGL

02652 - PGT MAS SPL

Runs onMTWTFSS

05:25 PM

UDT

Udumalaippettai

9h 28m

404 KM

19 stops

02:53 AM

TRL

Tiruvallur

47 KM from CGL

06905 - KON-ASR BHARAT GAURAV

Runs onMTWTFSS

12:00 PM

PTJ

Coimbatore

51 KM from UDT

9h 45m

427 KM

28 stops

09:45 PM

PER

Chennai

54 KM from CGL

00804 - QLN - SGTY PARCEL EXP

Runs onMTWTFSS

05:20 AM

CBE

Coimbatore

55 KM from UDT

9h 55m

415 KM

19 stops

03:15 PM

AVD

Avadi

49 KM from CGL

06620 - Coimbatore Chennai Egmore Bi Weekly Special

Runs onMTWTFSS

04:15 PM

CBE

Coimbatore

55 KM from UDT

10h 18m

378 KM

21 stops

02:33 AM

CGL

Chengalpattu

06042 - MAJN TBM SPL

Runs onMTWTFSS

06:05 PM

CBE

Coimbatore

55 KM from UDT

10h 40m

404 KM

26 stops

04:45 AM

TBM

Chennai

29 KM from CGL

06064 - QLN MS SPL

Runs onMTWTFSS

05:10 PM

CBE

Coimbatore

55 KM from UDT

10h 40m

427 KM

22 stops

03:50 AM

MS

Chennai

52 KM from CGL

06066 - QLN MS SPL

Runs onMTWTFSS

04:57 PM

PTJ

Coimbatore

51 KM from UDT

10h 48m

426 KM

23 stops

03:45 AM

MS

Chennai

52 KM from CGL

06062 - QLN MS SPL

Runs onMTWTFSS

04:57 PM

PTJ

Coimbatore

51 KM from UDT

10h 53m

426 KM

23 stops

03:50 AM

MS

Chennai

52 KM from CGL

06632 - Coimbatore Chengalpattu Weekly Special

Runs onMTWTFSS

01:15 PM

CBE

Coimbatore

55 KM from UDT

12h 15m

378 KM

17 stops

01:30 AM

CGL

Chengalpattu

06032 - Tirunelveli Chennai Egmore Special Fare Special

Runs onMTWTFSS

02:45 PM

UDT

Udumalaippettai

1d 11h 5m

379 KM

15 stops

01:50 AM

CGL

Chengalpattu

06616 - Coimbatore Chennai Central Weekly Sf Special

Runs onMTWTFSS

12:30 AM

CBE

Coimbatore

55 KM from UDT

2d 7h 45m

426 KM

11 stops

08:15 AM

MAS

Chennai

52 KM from CGL

Other Trains from Udumalaipettai to Chengalpattu

7 found from PTJ, CBE, PLNI to AVD, PER, MAS, CGL

Train name and numberStarting stationDurationEnding station

16042 - Allepey Coimbatore Chennai Central Express

Runs onMTWTFSS

10:00 PM

PTJ

Coimbatore

51 KM from UDT

6h 59m

415 KM

26 stops

04:59 AM

AVD

Avadi

49 KM from CGL

82636 - Qln Mas Suvidha

Runs onMTWTFSS

11:10 PM

PTJ

Coimbatore

51 KM from UDT

7h 30m

427 KM

53 stops

06:40 AM

PER

Chennai

54 KM from CGL

16359 - ERS PATNA EXP

Runs onMTWTFSS

04:40 AM

CBE

Coimbatore

55 KM from UDT

8h 5m

427 KM

33 stops

12:45 PM

PER

Chennai

54 KM from CGL

16309 - Ernakulam - Patna SF Express (PT)

Runs onMTWTFSS

09:30 PM

CBE

Coimbatore

55 KM from UDT

8h 35m

426 KM

43 stops

06:05 AM

MAS

Chennai

52 KM from CGL

16628 - West Coast Express

Runs onMTWTFSS

06:10 AM

PTJ

Coimbatore

51 KM from UDT

9h 5m

426 KM

32 stops

03:15 PM

MAS

Chennai

52 KM from CGL

16002 - Palani - Chennai Central SF Express

Runs onMTWTFSS

06:15 PM

PLNI

Palani

32 KM from UDT

10h

417 KM

16 stops

04:15 AM

MAS

Chennai

52 KM from CGL

16860 - MAQ MS EXP

Runs onMTWTFSS

03:25 PM

PTJ

Coimbatore

51 KM from UDT

11h 18m

378 KM

53 stops

02:43 AM

CGL

Chengalpattu

Trains from Chengalpattu to Udumalaipettai

Trains originating from Udumalaipettai

Train name and numberStarting stationDurationEnding station

02197 - CBE JBP SF SPL

03:25 PM

CBE

Coimbatore

1d 17h 19m

1391 KM

33 stops

08:45 AM

JBP

Jabalpur

16614 - CBE RJT EXPRESS

12:15 AM

CBE

Coimbatore

1d 17h 34m

1420 KM

36 stops

05:50 PM

RJT

Rajkot

03358 - CBE BJU SPL

12:50 AM

CBE

Coimbatore

2d 5h 10m

1869 KM

44 stops

06:00 AM

BJU

Barauni

12647 - KONGU EXPRESS

04:15 PM

CBE

Coimbatore

1d 22h

1958 KM

27 stops

02:15 PM

NZM

Delhi

16608 - CBE CAN EXPRESS

02:15 PM

CBE

Coimbatore

6h 45m

199 KM

33 stops

09:00 PM

CAN

Kannur

Trains passing through Udumalaipettai

Train name and numberStarting stationDurationEnding station

16843 - TPJ PGTN EXP

07:30 PM

KJKD

Kanjikode

55m

12 KM

26 stops

08:25 PM

PGTN

Palakkad

22620 - TEN BSP EXPRESS

02:10 PM

TUP

Tiruppur

1d 7h 25m

1322 KM

33 stops

09:35 PM

BSP

Bilaspur

22816 - ERS BSP EXPRESS

02:10 PM

TUP

Tiruppur

1d 7h 25m

1322 KM

25 stops

09:35 PM

BSP

Bilaspur

22608 - BAND ERS SPL

01:45 AM

PTJ

Coimbatore

4h 15m

134 KM

13 stops

06:00 AM

ERS

Kochi

18189 - TATA ERS EXP

09:35 PM

PTJ

Coimbatore

4h 19m

134 KM

51 stops

01:55 AM

ERS

Kochi

Trains reaching to Chengalpattu

Train name and numberStarting stationDurationEnding station

12851 - BSP MAS SF EXP

08:45 AM

BSP

Bilaspur

23h 5m

1019 KM

16 stops

07:50 AM

MAS

Chennai

16058 - SAPTHAGIRI EXP

06:40 PM

RU

Tirupati

3h 35m

102 KM

10 stops

10:15 PM

MAS

Chennai

22157 - CSMT MS SF MAIL

10:55 PM

CSMT

Mumbai

23h 20m

1028 KM

35 stops

10:15 PM

MS

Chennai

01063 - NGP MAO SPECIAL

11:30 AM

CSMT

Mumbai

1d 1h 25m

1028 KM

24 stops

12:55 PM

MAS

Chennai

22159 - CSMT CHENNAI EXP

12:45 PM

CSMT

Mumbai

22h

1028 KM

31 stops

10:45 AM

MAS

Chennai

Trains passing through Chengalpattu

Train name and numberStarting stationDurationEnding station

01144 - TN CSMT SPL

04:00 PM

CJ

Kanchipuram

23h 40m

1000 KM

30 stops

03:40 PM

CSMT

Mumbai

01162 - VLNK LTT SPL

01:30 PM

CJ

Kanchipuram

1d 1h 35m

1005 KM

21 stops

03:05 PM

LTT

Mumbai

22102 - MDU LTT EXPRESS

11:00 PM

CJ

Kanchipuram

21h 30m

1005 KM

26 stops

08:30 PM

LTT

Mumbai

08312 - ED SBP SPL

08:00 PM

PER

Chennai

1d 1h 15m

1012 KM

33 stops

09:15 PM

SBP

Sambalpur

12852 - MAS BSP EXPRESS

03:40 PM

MAS

Chennai

22h 50m

1019 KM

16 stops

02:30 PM

BSP

Bilaspur